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| 25倍中红外连续变焦光学系统设计 | |
| 引用本文： | 周昊,刘英,孙强.25倍中红外连续变焦光学系统设计[J].光学学报,2012,32(4):422001-218. |
| 作者姓名： | 周昊 刘英 孙强 |
| 作者单位： | 周昊:中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033中国科学院研究生院, 北京 100049 刘英:中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033 孙强:中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033 |
| 基金项目： | 国家自然科学基金(60977001)资助课题。 |
| 摘 要： | 针对制冷型320pixel×240pixel凝视焦平面阵列探测器,设计了一个25倍中红外连续变焦光学系统。该系统由变焦系统和二次成像系统构成。变焦系统由两个子变焦系统串联而成,可以实现高变焦比;二次成像系统的作用是压缩物镜口径和实现冷光阑效率的要求。该中波红外连续变焦系统光学系统的工作波段位于3.7～4.8μm,可以实现12～300mm连续变焦,F数达到2.5,满足100%冷光阑效率的要求。该系统具有变焦比大、相对孔径大、变焦行程短和变焦轨迹平滑等优点。 |
| 关 键 词： | 光学设计 连续变焦 中红外 高变焦比 |
| 收稿时间： | 2011/8/4 |
Mid-Infrared Zoom Optical System with Ratio of 25 |
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| Zhou Hao,Liu Ying,Sun Qiang.Mid-Infrared Zoom Optical System with Ratio of 25[J].Acta Optica Sinica,2012,32(4):422001-218. | |
| Authors: | Zhou Hao Liu Ying Sun Qiang |
| Institution: | 1(1Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun,Jilin 130033,China 2Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
| Abstract: | For 320 pixel×240 pixel cooled staring focal plane array detector, a mid-infrared zoom optical system with ratio of 25 is designed. The system consists of a zoom system and a re-imaging system. The zoom system consists of two small zoom lenses, which can realize large zoom ratio; the re-imaging system can satisfy requirement of the cold shield efficiency, and the diameter of lens can be reduced because of it. The mid-infrared zoom optical system works in the range of 3.7～4.8 μm, it can realize 12～300 mm continuous zoom and satisfy requirement of 100% cold shield efficiency; F number of the system is 2.5. The zoom system has advantages such as a large zoom ratio, a large aperture, and short and smooth zoom paths. |
| Keywords: | optical design continuous zoom mid-infrared large zoom ratio |
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